Emergency-lock.



F. 1. LE BEAU.

EMERGENCY LOCK.

APPLICATION FILED MAR.12.1917.

Patented Jan. 22, 1918.

3 SHEETSSHEET I.

F. J. LE BEAU.

EMERGENCY LOCK.

APPLICATION FILED MAR. 12. 1917. 1,Q54 1% Patented Jan. 22, 1918.

mm Q 1 9m mm F. J. LE BEAU.

EMERGENCY LOCK.

APPLICATIQN FILED MAR. I2. 1912.

Patented Jan. 22, 1918.

mm lw,

III/A I IIIIII FERNANDO J. LE BEAU, OF

EMERGENCY-L CK.

Application filed March 12,

To all whom it may concern:

Be it known that I, F ERNANDO J. Ln BEAU, a citizen of the United States, residing at Chicago, in the county of Cook and Specification of Letters Patent;

Patented J an. 22, 1918.

1917. Serial No. 154,143.

view of so much of the mechanism as ap pears in Fig.7, taken at right angles to Fig. 7.

The emergency eXit door to which the State of Illinois, have invented a certain device is applied comprises a vertical rear 60 new and useful Improvement in Emerplate located on the outside of the room gency-Locks, of which the following is a from which emergency exit is to be effected, specification. and a front plate 12 movable with reference \Vhile'many ofv the features of this inthereto-normally pushed outward by springs 10 vention are applicable to locks generally, it 14 inclosing telescoping rods 16 in the ordi- 65 is so specially applicable to emergency exit nary manner, the front plate being retained doorsof the general. type shown" in Freed innormal position by a marginal flange 18' Patent, Number 992,554, issued May 16th, located upon the edge member 20 of the 1911, that it is so entitled and described. door. In the particular illustration in the The object of this invention is to provide drawings, members 10, and 18 are made a door latch operatable by knobs on oppoall in one piece. site sides of the door with a locking device Thedoor is mounted by mechanism not for detachably securing one of the knobs shown in the drawings to swing from closed against rotation to operate the latch in position adjacent to the door frame 22 to 20 which anyof' the standard forms or'makes an open position so that persons can pass of tumbler locks can be substitutedrin the. through the door opening closed by the mechanism' at the will of the purchaser, door. The door is held in the position thus doing away with the requirements that shown in-the figures by a sliding latch dea the contractor for the latch mechanism be vice mounted, for convenience, on a small 25 also the contractor for the lock'mechanism. plate 23 secured on rear wall 10 of the door,

The invention consists in mechanism for though all the mechanism hereafter decarrying out the foregoing objects, which scribed as mounted on plate 23 may be can be easily and cheaply made and, inmounted'directly on wall 10 without departstalled, which is satisfactory in operation, ing from this invention. The latch device 30 and is not readily liable to get out of order. essentially comprises a U-shaped carriage 24 The invention consists more particularly in in which a pivoted latch member 26 is the features and details of construction mounted. The sliding motion of the carwhich will be hereafter more fully set forth riage is made possible by the fact that it is I in the specification and claims. provided on opposite sides with angular 35 Referring to the drawings, in which flanges 28 which embrace rods 30 mounted similar numerals indicate the'same parts ,thrmt lgiontlthe several views, v

liigiugieio iiE 1" he re" Vii? a loft in e mohznaninm o i: it 1 tsi rfmntlioi: 1t: [links 1;. list: at] [man a: to t: me] E from the back ed with to] a routine; a'lanl L [melanin 12 6! 3 it (ill on a iglizth' u s: ieiwero i ii n upon fixed supports 82 rising plate 10, these rods being equipp 1; 31min; SUE-1 .x limit? in ngrzg a t 1.: tllatcl 11 F], ,J-luai1di 3. ll'tlrhi llaihi I imchetn :3?! i2 (is .13 i h ,ipvn h1a3&6;ntoltgtenliaiia negozinailisisineirmalty} n fillet i ii it] 13 (p notion: E .ahow Ill L. f 15 1 ;E 1i 11w ore] race :dnrznig 2;. it [ton bolt) a a it )lIlK-l ijnig" g: lpteta Z4; 5; taiatecb i 10 i he) a aoa'fuigrga 14 3L3,

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the door when the door is open and is approaching closed position; that is to say, when'the door approaches closed position, the inclined edge 44 of latch dog 26 strikes the edge of the door frame 22, with the result that the carriage 24 and latch dog 26 are, as the door closes, moved bodily to the left as viewed in the figures against the action of springs 34 until such time as the parts reach the position of, say, Fig. 6, whereupon the springs force the carriage and latch to the right so that latch dog 26 enters recess 46 in the door frame and the door becomes locked. The latch mechanism described in this paragraph is more fully described and claimed in my companion application, Serial Number 152,982.

For all practical purposes, the carriage 24 and attached parts thus described constitute a rigid locking bolt, and they will, for convenience, he sometimes so referred to hereafter. Other forms of spring pressed rigid locking bolts may be substituted in the mechanism which follows without departing from this invention.

The latch mechanism just described standing alone can be released from latched position by pressure upon the plate 12 in the manner described, and cannot be released in any other manner from the front side of the door (the side of plate 12), and cannot be in any manner released from the opposite side of the door. \Vhile doors so constructed are useful, it is frequently desirable to equip doors with rotatable door-knobs of the ordinary type, putting one on the inside of the door which can be always rotated by a person desiring to open the door, and putting another on the outside of the door which is controlled by a lock mechanism proper rendering it operative or inoperative at the will of the'key holder for moving the latch boltmechanism from the outside of the door.

In the drawings, inner knob 50 and outer knob 52 are provided, each respectively equipped with shafts 54 and 56 entering the door and rotatively telescoping together at 58. Rigidly connected to shaft 54 is a metallie disk 60 having three outwardly turned lugs 62 arranged on the circumference of a circle so that they are adapted to bear and lug 80 near the bottom of plate 23, and

Similarly,

, whose upper end 82 bears against a lug 83 upon the side of the carriage 24; the result being that the springs 34 through the action of the carriage normally tend to move lever 78 t0 the right until it reaches the position shown in Fig. 3.

- In the central portion of lever 78 is formed an enlargement 84 containing an elongated transverse recess 86 within which the shafts 5456 lie. This recess 86 is of such a size and shapethat the lever 7 8 may move between the positions of Figs. 3 and 4 without in any way being interfered with by these shafts. p

Extending from disk 60 and away fro support 66 are two lugs 88 and 90 arranged to embrace the enlargement 84 on lever 7 8 in such a way that rotation of handle 50 in either direction will always positively move lever'78 and consequently latch mechanism In a similar manner, disk 72 is provided with corresponding lugs 92 and 94 similarly embracing enlargement 84 on lever 78, enabling similar control of lever 78 by knob 52 under all conditions, except when knob 52 is locked against movement in the manner hereafter described. Lugs 92 and 94 are so placed on disk 72 that when knob 52 is locked, as hereafter described, these lugs 92 and 94 do not in any way prevent the op-'.

eration of lever 78 under manipulation of knob 50.

Lug 94, heretofore described, is different in form from lug 90 in that it is provided with a downwardly extending finger 96 adapted to enter a notch or recess 98 formed in member 100 of a locking plate 102 slidingly mounted to move parallel with reference to plate 23. In the particular case here illustrated, this locking plate 102 is mounted for reciprocation by having one end member 100 perforated to receive an extending tongue 104 on frame plate 66, and its opposite end 106 is similarly perforated to receive a corresponding tongue 108 on another frame plate 110 supported by lug 80 and lug 112 secured to plate 23 by screws 114. The parts are so arranged that when locking plate 102 is in the position shown in Fig. 8, finger 96 is in notch98 and is held rigid in that position, with the result that knob 52 cannot turn and consequently cannot operate the latchmechanism; while, on the other hand, when locking plate 102 drops or is moved to the position of Fig. 2,

the locking plate and all of its partsentirely clear finger 96, with the result that rotation of knob 52 operates lever 78 in either direction, and consequently the latch mechanism, thus enabling a person approaching the door from the outside to secure admission to the room'by simply rotating knob 52 in the ordinary manner.

In order to detachablysecure locking plate 102 in each of the last two described positions at the will of the owner of the room controlled by the door, and to do this without its being necessary forthe maker of the parts thus far described to manufacture or contract for the key-operating lock proper, the parts are arranged of such .a size and shape that any one of the standard lock cylinders; for instance those made by Yale, Corbin, and similar concerns, may be in serted in position to operate member 102 without otherwise disturbing the parts heretofore described. In the drawings, one of the standard cylinders 116 provided with a key 118 is inserted in the position shown so that the crank pin 120 on the standard crank arm 122 of such a device enters and travels in cam slot 1% so shaped and arranged, as shown, that rotation of the key 118 in the ordinary manner will reciprocate plate 102 between the locked and unlocked positions heretofore described, and the cam slot is also so shaped that at the end of the stroke of the key in either direction the plate 102 cannot reciprocate without the assistance of the key; in other words, it is impossible, by taking hold of the plate 102, to operate the lock mechanism 116.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A device of the class described, in combination, a suitable support, a latch mechanism, a lever pivoted a distance from the latch mechanism and engaging the latch mechanism to operate it, an enlargement upon said lever provided with an elongated slot extending transversely thereof, a pivoted operating shaft so located as to extend through said elongated slot in the lever, and means carried by said shaft engaging the enlargement of the lever, so placed that rotating the shaft in either direction will correspondingly rock the lever.

2. A device of the class described, in combination, a suitable support, a latch mechanism, a lever pivoted a distance from the latch mechanism and engaging the latch mechanism to operate it, an enlargement upon said lever provided with an elongated slot extending transversely thereof, a pivoted operating shaft so located as to extend through said elongated slot in the lever, and means carried by said shaft engaging the enlargement of the lever, so placed that rotating the shaft in either direction will correspondingly rock the lever, said engaging means being also so located that the lever may be rocked entirely independently of iiIlCl lugs and the shaft connected there-- wit 3. A device of the class described, in combination, a suitable support, a latch mechanism, a lever pivoted a distance from the latch mechanism and engaging the latch mechanism to operate it, an enlargement upon said lever provided with an elongated slot extending transversely thereof, a pivoted operating shaft so located as to extend through said elongated slot in the lever, means carried by said shaft engaging the enlargement of the lever, so placed that rotatingv the shaft in either direction will correspondingly rock the lever, said engaging means being also so located that the lever may be rocked entirely independently of said engaging means and the shaft connected therewith, and a key-controlled locking device adapted to secure said shaft without interfering with movement of the lever.

4. A device of the class described, in combination, a suitable support, a latch mechanism, a lever pivoted a distance from the latch mechanism and engaging the latch mechanism to operate it, an enlargement upon said lever provided with an elongated slot extending transversely thereof, a piv-' oted operating shaft so located as to extend through said elongated slot in the lever, and lugs carried by said shaft embracing the outside of the enlargement of the lever, so placed that rotating the shaft in either direction will correspondingly rock the lever.

5. In a device of the class described, in combination, a suitable support, a latch mechanism, a lever pivoted a distance from the latch mechanism and engaging the latch mechanism to operate it, an enlargement upon said lever provided with an elongated slot extending transversely thereof, a pivoted operating shaft so located as to extend through said elongated slot in the lever, and lugs carried by said shaft embracing the outside of the enlargement of the lever, so placed that rotating the shaft in either direction will correspondingly rock the lever, said lugs being also so located that the lever may be rocked entirely independently of said lugs and the shaft connected therewith.

6. In a device of the class described, in combination, a suitable support, a latch mechanism, a lever pivoted a distance from the latch mechanism and engaging the latch mechanism to operate it, an enlargement upon said lever provided with an elongated slot extending transversely thereof, a pivoted operating shaft so located as to extend through said elongated slot in the lever, lugs carried by said shaft embracing the outside of the enlargement of the lever, so placed that rotating the shaft in either direction will correspondingly rock the lever, said lugs being also so located that the lever may be rocked entirely independently of said lugs and the shaft connected therewith, and a key-controlled locking device adapted to secure said lugs and shaft without interfering with movement of the lever.

7. In a device of the class described, in combination with a door and its door frame,

a latch mechanism spring pressed outward from the door and engaging the door frame, a lever pivoted inside the door andhaving its free end engaging the latch to operate it against its spring mechanism, a pair of door knobs located on opposite sides of the door, means by which each door knob may independently move said lever, a projecting finger carried by one door knob mechanism, a

reciprocatable locking plate adapted to move between two difi'erent positions; in one of which it engages said finger and in the other Copies of this patent may be obtained m of which it clears it, and an independent key controlled lock mechanism adapted to nesses. V

FERNANDO J. LE BEAU.

Witnesses: I

' Dw'ionT B. CIIEEVER, M. S. ROSENWEiG. I

five cents each, by addressing the Commissioner of Patents, 7 Washington, D. C. 

